Perhaps you should try some spelling variations:
xanh tai » hanh tai, anh tai, vanh tai
kho tang » cao tang
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, ky trong
tai cua » thai cua, tai cuc, tri cua
mai hoi » mai khoi, lai hoi, mai doi
va xanh » va danh, va hanh, va anh
dai hoi » dai hoc, dai hai, dai moi
xuc va » duc va, tuc va, luc va
vu sac » vu sach, vu san, va sac
ve cam » ve cham, ve cac, va cam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ((ky tang) or (kho tang)) ((mai hoi) OR (dai hoi)). hieu ve cam xuc va xanh tai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ((ky tang) OR (kho tang)) ((mai hoi) OR (dai hoi)). hieu ve cam xuc va xanh tai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ((ky tang) or (kho tang)) ((mai hoi) OR (dai hoi)). hieu ve cam xuc va xanh tai cua tre*".